#amenorrhea__amenorrhoea__amenia  absence or suppression of normal menstrual flow
  supertype:  symptom  (medical) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease
  subtype:  primary_amenorrhea__primaryamenorrhea  delay of menarche beyond age 18
  subtype:  secondary_amenorrhea__secondaryamenorrhea  cessation of menstruation in a woman who had previously menstruated

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